The compact red dot reflex sight is small enough to mount on a pistol and yet large enough to use comfortably on a rifle as a cqb option.It features a single side activation button for fast activation, 1 moa adjustment per click, integrated weaver-style mounting system and control of the illuminated red dot with six levels of brightness.Battery: CR 2032Magnification: 1xObjective: 27mmEye Relief: UnlimitedDot Size: 3.5 MOALength: 2.375"Weight: 3.56 ozFinish: Matte BlackReticle: 3.5 MOA Red DotAdjustment Size: 1.0 MOAProofs: Fog Proof/Shock ResistantOptic Coating: Anti-ReflectionWindage Elevation: Adjustable